package model;

import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * Created by xiebang
 * Description
 * User:小谢
 * Date:2022-03-10
 * Time:15:52
 */
// 通过这个类来封装“建立联系”，这样的基本操作
public class DBUtil {
    private static final String URL = "jdbc:mysql://127.0.0.1:3306/blogsystem?characterEncoding=utf8&useSSL=false";
    private static final String USERNAME = "root";
    private static final String PASSWORD = "xcb@19980521";

    private static DataSource dataSource = new MysqlDataSource();

    static {
        ((MysqlDataSource)dataSource).setURL(URL);
        ((MysqlDataSource)dataSource).setUser(USERNAME);
        ((MysqlDataSource)dataSource).setPassword(PASSWORD);
    }

    public static Connection getConnection() throws SQLException {
        return dataSource.getConnection();
    }

    public static void close(Connection connection, PreparedStatement statement, ResultSet resultSet){
       if (resultSet != null){
           try {
               resultSet.close();
           } catch (SQLException e) {
               e.printStackTrace();
           }
       }

       if (statement != null){
           try {
               statement.close();
           } catch (SQLException e) {
               e.printStackTrace();
           }
       }

        if (connection!= null){
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}
